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Old 07-04-2016, 11:17 AM   #1
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1967 24' Tradewind
Bishop , Georgia
Join Date: Jun 2016
Posts: 5
Brake tutorial for '67 A/S needed

Does anyone have a link to brake and brake controller info for newbies? TRying to haul a '67 with a Cayenne. I found where the brake harness is under the Cayenne dash, but, have no clue what to buy , where it goes and how it attached to the A/S. Seems like it should be easy but too much info has got me all confused. Willing to learn but need info.
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Old 07-04-2016, 12:04 PM   #2
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1956 26' Cruiser/Overlander
Wimberley , Texas
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Posts: 52
perhaps useful to you, obtained from google...many other useful results at gooogle, besides these two links to etrailer.com (a recognized vendor of "all things trailer" usually with VERY helpful install videos to assist the DIY'er)...

Cayenne Brake Controller installation...
https://www.etrailer.com/vm/Porsche/Cayenne/bc

Cayenne towing wire harnesses & adapters...
https://www.etrailer.com/vm/Porsche/Cayenne/t1
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Old 07-04-2016, 08:22 PM   #3
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1986 34' Limited
1966 24' Tradewind
Conifer , Colorado
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Hello TomS, welcome to the vintage Airstream hobby. You are wise to learn and get properly set up with a good trailer brake controller before towing.

I would recommend you get your new brake controller installed and tested by a good shop in your area. You are right about the harness under the dash. It seems like each manufacturer does it a little differently. There are techs that do this for a living and are quite good at it. Worth the cost in my view.

Your tow vehicle has to have a stout category 4 (IV) 2" square receiver under the rear bumper. Make sure it is rated for your trailer accordingly. And your tow vehicle has to have a 7 pin trailer wiring connector attached under the bumper as well. Maybe your vehicle has these items already?

Your old Airstream is likely like my 66 Airstream. It has 12" drum brakes with 12 volt electromagnets on a lever rubbing against the drum face as the brake actuator. The more voltage the brake controller applies to the electromagnet, the stronger the magnetic force and the harder the brakes are applied. The brake controller adjusts this voltage in proportion to the applied braking force your foot applies to the tow vehicle brake pedal.

The whole idea is the trailer brakes stop all the inertia of the weight of the trailer at speed without over burdening the tow vehicle brakes.

By the way, our trailer brakes are old fashioned adjust them yourself type. I don't know when you last did a maintenance on your trailer brakes and bearings, but I recommend it be done yearly. A good brake controller is worthless without good trailer brakes.

There is a lot to learn about trailering. Airstream Forum members have a wealth of knowledge and experience. Post your questions, and I'm sure you will get the information you need.

David
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Old 07-05-2016, 05:31 AM   #4
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1967 24' Tradewind
Bishop , Georgia
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Thanks for the info. Will be towing with a suburban and a cayenne. Thinking of getting this, Tekonsha Prodigy RF Wireless Trailer Brake Controller . Any comments?
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Old 07-05-2016, 06:51 AM   #5
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If your 67 has the old 6-pin style plug you will have to put a newer 7-pin plug on the trailer. I found that the old style plug on mine was not wired the way diagrams showed it should be to the old standard. You will have to check each wire on the trailer to be certain where it goes (lights,turn,brake, charge) so you can make sure the pin pattern on the new trailer plug matches the new standard configuration used in the female connection used on modern vehicles.
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Old 07-05-2016, 07:29 PM   #6
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1986 34' Limited
1966 24' Tradewind
Conifer , Colorado
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I have never heard of a "wireless brake controller" before. The brake controller gets its input from your foot as you step on the tow vehicle brake pedal and takes this signal and delivered proportional voltage to the brake magnets. I can't imagine how it could be done "wirelessly", but I didn't think adjusting the thermostat in your home with your phone would be possible either. I know nothing about this type of brake controller, but it better work good.

David
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Old 07-06-2016, 01:44 PM   #7
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2007 22' International CCD
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Most modern brake controllers use internal electronic accelerometers to handle brake force control. They sense how hard the tow vehicle is decelerating when you step on the brakes. This sending controls the brake current applied to the trailer.

The position of or the force on the tow vehicle brake pedal is not sensed. The brake controller has adjustments for proportional brake force and initial force when you hit the brake pedal. I have a prodigy 2 system. It is wired, but the modern wireless ones work similarly.


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